Before this commit, on pivot view when a user adds some groupBy the dropdown menu remains always open. This commit restore the same behaviour like on desktop. Steps to reproduce: * Open an app with a Pivot view * Select the Pivot view * Add one "groupBy" * The dropdown remains open => BUG Task ID: 2439742 closes odoo/odoo#64944 X-original-commit: 298f3900a8f4c80fe06585634ce97c7725cf7f7d Signed-off-by: Adrien Dieudonné (adr) <adr@odoo.com> Signed-off-by: rfr-odoo <rfr-odoo@users.noreply.github.com>